/Engine/Plugins/Runtime/RigVM/Source/RigVMEditor/Public/Editor/RigVMGraphDetailCustomization.h
Add the widget for a rotation (rotator or quat)
template<typename RotationType> void CustomizeRotation ( [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< class [IPropertyHandle](API\Editor\PropertyEditor\IPropertyHandle) > InPropertyHandle, class [IDetailChildrenBuilder](API\Editor\PropertyEditor\IDetailChildrenBuilder) & StructBuilder, [IPropertyTypeCustomizationUtils](API\Editor\PropertyEditor\IPropertyTypeCustomizationUtils) & StructCustomizationUtils )